Self-packing tubing ring



June 17 I924. 1,498,075

1 c. E. DALE SELF PACKING TUBING RING Filed Feb. 17 1923 V v T z 4 f ZMi I] V attozmq Patented June 1 7, 1924.

UNITED STATES PATENT OFFICE.

CHARLES E. DALE, 0F BARNSDALL, OKLAHOMA, ASSIGNOR OF ONE-HALF TO ROBERTD. ROOD, OF BARTLESVILLE, OKLAHOMA.

SELF-PACKING TUBING RING.

Application filed February 17, 1923. Serial No. 619,777.

To all whom it may concern:

Be it known that 1, CHARLES a citizen of the United States, residing atBarnsdall, in the county of Osage and State of Oklahoma, have inventedcertain new and useful Improvements in Self-Packing Tubing Rings, ofwhich the following is a specification, reference being had to theaccom-' panying drawings.-

This invention relates to tubing rings, and more particularly to a selfpacking tubing rlng.

An important object of the invention is to provide a tubing ring forminga packing gland, the packing of which is compressed by the weight of thetubing to form a seal not only between the ring and the tubing butbetween the ring and the casing head upon which the ring is supported.

A further object of the invention is to provide a device of thischaracter which is extremely simple in its construction, which may bereadily applied and which is a general improvement in the art.

These and other objects I attain by the construction and arrangementshown in the accompanying drawings wherein for the purpose ofillustration is shown a preferred embodiment of my invention and whereinlike reference characters designate like parts throughout.

In the drawings Figure 1 is a vertical sectional view taken through acasing head showing a tubing ring constructed in accordance with myinvention applied thereto; and

Figure 2 is a fragmentary plan view thereof.

Referring 'now more particularly to the drawings, the numeral 10designates a casing head which is, as well known to those familiar withthe art, a device usually in the form of a unitary casting havinginterior threads 11 for engagement with the casing 12 of a well andhaving outlets 13 from which the oil and gas from the well may bewithdrawn. Such casing heads are usually provided with a ring 14 havingan aperture 15 through which the tubing 16, of the'well extends.

In accordance with my invention, I provide a base ring 17 ada ted to beseated upon the ring 14 of the casing having a bore 18 of a size closelyapproximating the external diame er of he tu ing ith hi h the ring E.DALE,

ward movement of 17 is to be employed. In its lower face the ring 17 isprovided with an annular groove 19 adapted for the reception of-a pieceof ring packing 20. The upper end of the bore 18 of the ring isenlarged, as at 21, formingan upwardly directed shoulder 22 forming aseat for an annular packing ring 23.

A slip ring 24 is provided having a downwardly tapering bore 25, thelower end of which is of a diameter substantially the same as theinternal diameter of the bore 18 of the ring '17. The lower face of theslip ring 24 is provided with a downwardly extending flange 26, theexternal diameter of which is such that it has a sliding fit within theenlargement 21 of the bore 18. The lower face of this flange slopesupwardly and inwardly, as indicated at 27.

The device hereinbefore set forth is not employed until all of thetubing sections with the exception of the last tubing section have beenpositioned in the casing. The last tubing section is inserted throughthe rings 24 and 17 in the order named, the packing rings 27' and 20being in position. The rings are moved into position against the casinghead and when the tubing section has been lowered through the rings thedesired distance, slips 28 are inserted at the upper end of the ring 24and about the tubing section 16 subsequently to which the tubing isagain lowered. This lowering causes the slips 28 to firmly engage withthe tubing and to move, downwardly therewith with the result that thering 24 is passed downwardly until it engages the ring 17. This downwardmovement of the ring 24 brings the inclined lower face 27 of the flange26 thereof into engagement with the packing, .compressing the packingand at the same time forcing the same inwardly against the outer face ofthe tubing to seal the space between the rings 17 and 24 and the tubing.The downthe ring 24 having reached its limit, the entire weight of thetubingis supported upon the ring 17 with the result that the packingring 20 is crushed against the top 14 of the casing tubing for sealingthe tubing with relation to the casing head. It will'furthermore beobvious that the construction thereof as hereinbefore set forth iscapable of some 1 change and modificationwithout materially departingfrom the spirit of my invention and I accordingly do not limit myself tov such specific structure except as hereinafter the shoulder, a gasketbetween the casing head ring and shoulder and means upon the casing headfor clamping the ring upon the gasket, the casing head ring having anopening of the same size as the tubing associated therewith, of a tubingring comprising a base ring adapted to be seated upon the casing head.ring about the tubing hole thereof and having in its lower face apacking groove adapted for the reception of a packing ring the openingof the base ring being of the same diameter as the tubing with which itis to ooact, and a slip ring adapted for engagement with the base ringand to engage a tubing by means of slips or the like to support thesame, and a packing element interposed between the base ring and slipring and compressed upon the application of pressure to the slip ring tobe thereby moved inwardly for engagement with the upper walls of atubing and to seal the joint between the base and slip rings.

2. The combination with the usual open ended casing head the opening ofwhich is shouldered, a casing head ring seated upon the shoulder, agasket between the casing head ring and shoulder and means upon thecasing head for clamping the ring upon the gasket, the casing head ringhaving an opening of the same size as the tubing associated therewith,of a tubing ring comprising a base ring adapted to be seated upon theeas- I ing head ring about the tubing hole thereof and having in itslower face a packing groove adapted for the reception of a packing ring,said base ring being provided with a vertical bore of the same diameteras the tubing with which it is to ooact, said bore being enlarged at itsupper end to form an upwardly directed shoulder, and a slip ring adaptedfor engagement with thebase ring and having a flange entering theenlarged bore, packing seated upon said shoulder and against which thelower end of the flange abuts, and means carried by the slip ringengagin the tubing to support the same.

3. e combination with the usual open seated upon said shoulder andagainst which ended casing head the opening of which is shouldered, acasing head ring seated upon the shoulder,-a gasket between the casinghead ring and shoulder and means upon the casing head for clamping thering upon the gasket, the casing head ring having an opening of the samesize as the tubing associated therewith, of a tubing ring comprising abase ring adapted to be seated upon the casing head ring about thetubing hole thereof and having in its lower face a packing grooveadapted for the reception of a packing ring, said base ring beingprovided with a vertical bore of the same diameter as the tubing withwhich it is to coact, said bore being enlarged at its upper end to forman upwardly directed shoulder, a slip ring adapted for engagement withthe base rin and having aflange entering the enlarged bore, packingseated upon said 8 shoulder and against which the lower end of theflange abuts, and means carried .by the slip ring engaging the tubing tosupport the same, the lower end of said flange inclining inwardly andupwardly from the outer edge 8 thereof. I

4. The combination with the usual open ended casing head the opening ofwhich is shouldered, a casing head ring seated upon the shoulder, agasket between the casing head 9 ring and shoulder and means upon thecasing head for clamping the ring upon the gasket, the casing head ringhaving an opening of the same size as the tubing associated therewith,of a tubing ring comprising a base ring adapted to be seated upon thecasing head ring about the tubing hole thereof and having in its lowerface a packing groove adapted for the reception of a packing ring, saidbase ring being provided with a vertical bore of the same diameter asthe tubing with which it is to ooact, said bore being enlarged at itsupper end to form an upwardly directed shoulder, a slip ring adapted forengagement with the base ring and having a flange entering the enlargedbore, packing the lower end of the flange abuts, and means carried bythe slip ring engaging the tubing to support the same, the lower end ofsaid flange inclining inwardly and upwardly from the outer edge thereof,the bore of said base rin and the lower end of said slip ring being 0 adiameter substantially equal to the diameter of the tubing with whichthe tubing ring is to coaot.

In testimony whereof I hereunto aflix my signature.

CHARLES E. DALE.

